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Editorial Team
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Asked: 2026-05-12T19:06:40+00:00

I have the following code within a stored procedure. WHERE WPP.ACCEPTED = 1 AND

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I have the following code within a stored procedure.

WHERE
    WPP.ACCEPTED = 1 AND
    WPI.EMAIL LIKE '%@MATH.UCLA.EDU%' AND
    (WPP.SPEAKER = 0 OR
    WPP.SPEAKER IS NULL) AND
    WPP.COMMENT NOT LIKE '%CORE%' AND
    WPP.PROGRAMCODE = 'cmaws3'

The NOT LIKE statement is not working, and yes before anyone says anything there are items with the COMMENT column that does not include CORE and all the other columns are ok.

Does anyone know what is wrong with this?

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1 Answer

  1. Editorial Team

    If WPP.COMMENT contains NULL, the condition will not match.

    This query:

    SELECT  1
WHERE   NULL NOT LIKE '%test%'

    will return nothing.

    On a NULL column, both LIKE and NOT LIKE against any search string will return NULL.

    Could you please post relevant values of a row which in your opinion should be returned but it isn’t?

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